Footwear upper



FIG. 1 is a perspective view of the footwear upper embodying the new design;

FIG. 2 is an enlarged top plan view thereof;

FIG. 3 is a reduced right side view thereof;

FIG. 4 is a reduced left side view thereof;

FIG. 5 is an enlarged front view thereof; and,

FIG. 6 is an enlarged rear view thereof.

FIGS. 1-6 show features of an article of footwear in phantom lines. These features are shown for environmental purposes and do not form any part of the claimed design. Further, the phantom lines immediately adjacent the solid-line portions of the design form the boundary of the design, with the phantom lines forming no part of the claimed design. 

The ornamental design for footwear upper, as shown and described. 